The survey shows Cain ahead with 28%, Romney is polling at 21%
and Perry is way back at 7% behind Gingrich (9%) and Bachmann
(8%).

However.

As with a recent national poll of GOP voters, it's important to
note that a full two thirds of those polled have not made up
their minds: "Only one-third of the caucus-goers (32%) are
certain of their vote and don’t expect to change their mind.
Among these voters, 30% prefer Cain, 22% Romney, and 17% Paul."

So among the 30% who are already really into this
election Cain is way ahead. Everyone else is pretty much up
for grabs.

Why is Cain still ahead in that 30% group even after
demonstrating his total lack of foreign policy knowledge and
having his '9-9-9' plan essentially torn apart?

Considering Iowan's high regard for on-the-ground, door-to-door
political operations and keeping in mind Cain's Iowa operation
thus far essentially consists of the Godfather pizza outlets
located there (not nothing, but still) perhaps this is as much a
measure of Cain's appeal as it is the other candidates total lack
of it.